src/networkctl/command.c

   1 /*#############################################################################
   2 #                                                                             #
   3 # IPFire.org - A linux based firewall                                         #
   4 # Copyright (C) 2023 IPFire Network Development Team                          #
   5 #                                                                             #
   6 # This program is free software: you can redistribute it and/or modify        #
   7 # it under the terms of the GNU General Public License as published by        #
   8 # the Free Software Foundation, either version 3 of the License, or           #
   9 # (at your option) any later version.                                         #
  10 #                                                                             #
  11 # This program is distributed in the hope that it will be useful,             #
  12 # but WITHOUT ANY WARRANTY; without even the implied warranty of              #
  13 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the               #
  14 # GNU General Public License for more details.                                #
  15 #                                                                             #
  16 # You should have received a copy of the GNU General Public License           #
  17 # along with this program.  If not, see <http://www.gnu.org/licenses/>.       #
  18 #                                                                             #
  19 #############################################################################*/
  20
  21 #include <errno.h>
  22 #include <getopt.h>
  23 #include <string.h>
  24
  25 #include "command.h"
  26
  27 static const struct command* command_find(const struct command* commands, const char* verb) {
  28         for (const struct command* command = commands; command->verb; command++) {
  29                 if (strcmp(command->verb, verb) == 0)
  30                         return command;
  31         }
  32
  33         return NULL;
  34 }
  35
  36 int command_dispatch(sd_bus* bus, const struct command* commands, int argc, char* argv[]) {
  37         const struct command* command = NULL;
  38
  39         if (!argc) {
  40                 fprintf(stderr, "Command required\n");
  41                 return -EINVAL;
  42         }
  43
  44         const char* verb = argv[0];
  45
  46         // Find a matching command
  47         command = command_find(commands, verb);
  48         if (!command) {
  49                 fprintf(stderr, "Unknown command '%s'\n", verb);
  50                 return -EINVAL;
  51         }
  52
  53         return command->callback(bus, argc - 1, argv + 1);
  54 }